JP2006341338A - Clamp for machining - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clamp for machining such as wood working or metal working, formed so that a screw mechanism is neither separated from a shaft body nor exposed. <P>SOLUTION: In a clamp for machining, a pair of clamp pieces are disposed at a space on the shaft body, and at least one clamp piece is moved along the shaft body to fasten a member with the other clamp piece. A female screw 16 of female and male screws constituting a screw mechanism 15 is provided on a pipe-like end opening part of the shaft body 11, a male screw 21 is rotatably provided in the interior of a slide cylinder 14 located on the outside of the shaft body 11 and engaged with the female screw 16, a handle 25 for rotating the male screw 21 is provided, and a guide part 30 is provided between the shaft body 11 and the slide cylinder 14 so that the female screw side is not rotated, but moved rectilinearly by the rotation of the male screw side, and one clamp piece 12 provided on the outside of the slide cylinder 14 is moved along the shaft body 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a processing clamp that arranges a pair of clamp pieces on a shaft body with a space therebetween, enables at least one clamp piece to move along the shaft body, and clamps a member between the other clamp pieces. Is.

This type of hand tool is used for the purpose of joining wood together, and is similar to what has been used, for example, in the manufacture of furniture. As one form, a pipe-shaped shaft body is used for the flag pole, and a pair of clamp pieces are provided so as to be able to move and stop on the shaft body, and one of the clamp pieces is provided to be movable by a screw mechanism. Although there are some, the central axis of the screw mechanism is set at a position substantially coincident with the clamp portions of the pair of clamp pieces. This clamp uses a commercially available gas pipe or water pipe as a shaft body, and is characterized in that they are formed by cutting them to an appropriate length and attaching a clamp fitting and necessary parts. However, due to its structure, the screw mechanism is located away from the shaft and is always exposed. One of the pair of clamp pieces is directly moved by the screw mechanism, whereas the other clamp piece is not supported by the screw mechanism.

URL which can be browsed through a telecommunication line, http: //www.tamacraft. pony clamp (part numbers # 50, # 52, # 53) published in com / catalog2.html.

The present invention has been made paying attention to the above points, and an object of the present invention is to provide a processing clamp for woodworking, metalworking, or the like in which the screw mechanism does not leave the shaft body and is not exposed. Moreover, the other subject of this invention is providing the clamp for a process with the effect | action which pinches | interposes the member in a pair of clamp piece.

  In order to solve the above-described problems, the present invention provides a pair of clamp pieces arranged on a shaft body with a space therebetween, and enables at least one of the clamp pieces to move along the shaft body between the other clamp piece. With regard to processing clamps for woodworking, metalworking, etc., which fasten the member, the female screw of the male and female screws constituting the screw mechanism is provided in the pipe-like end opening of the shaft body, and the slide cylinder located outside the shaft body A male screw is rotatably provided inside, and is engaged with the female screw, and a handle is provided to rotate the male screw. Means are provided in which the guide portion is provided between the shaft body and the slide cylinder so that the clamp piece is moved along the shaft body.

  Also in the processing clamp of the present invention, a pair of clamp pieces and a shaft body that slidably arranges them are used. The shaft body has a hollow structure in which at least an end portion is a pipe-like opening. Both of the pair of clamp pieces are desired to be slidable on the shaft, but if one clamp piece operated by the screw mechanism is movable, the other clamp piece is not necessarily movable. good. However, the fact that the other clamp is also movable improves operability.

  The screw mechanism includes a female screw and a male screw that can be screwed together, and the female screw is provided in a pipe-like end opening of the shaft body. The male screw is provided so as to be rotatable inside a slide cylinder located outside the shaft body. One clamp piece of the pair of clamp pieces is provided outside the slide cylinder. On the other hand, the other clamp piece is provided on another movable member, and the movable member has a configuration that can move on the shaft body and can be stopped at an arbitrary position. Good thing.

The male screw is engaged with the female screw on the shaft body side to advance and retreat, but a handle is provided on a part of the shaft body located outside the slide cylinder for the rotation operation. A guide portion is provided so that relative rotation does not occur between the shaft body and the slide cylinder due to the screwing torque between the female screw and the male screw. This guide portion can be constituted by a long hole formed in the slide cylinder in the direction of the shaft body, and a shaft pin that is attached to the shaft body side from the long hole and that stops against rotation by hitting the side wall of the long hole. Also, an urging member such as a coil spring is provided between the end on the shaft body side and the inner surface end of the slide cylinder so that one clamp piece is urged away from the other clamp piece. Can do. In the present invention, it is easy to form the component parts so as to be detachable.

  Since the present invention is configured and operates as described above, the screw mechanism can be accommodated inside the shaft body and can be in an unexposed form. One clamp piece also has a screw mechanism on the shaft body side, and acts on the clamped member in the same way as the other clamp piece. There is an effect that can be done. In addition, since the so-called Futokoro size is reduced, the overall rigidity is increased, and the members can be sandwiched while maintaining the parallelism accurately.

  Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 shows an example of a processing clamp 10 according to the present invention, which has a shaft body 11 and a pair of clamp pieces 12 and 13 that can be arranged at intervals. The shaft body 11 has a pipe structure that can be expected to be a rigid body, and as described above, a steel pipe used for a gas pipe or a water pipe is used. Therefore, the length of the shaft body 11 is arbitrary, and the inside is hollow as a whole.

One clamp piece 12 is formed integrally with a slide cylinder 14 fitted on the outside of the shaft body 11, and the slide cylinder 14 is provided so as to be movable along the shaft body 11 using a screw mechanism 15. For this purpose, an end member 17 having an internal thread 16 constituting the screw mechanism 15 is attached to the end of the shaft body 11. Reference numerals 18 and 19 denote screw coupling portions for attaching the end member 17 to the end of the shaft body. The screw mechanism 15 includes the female screw 16 and a male screw 21 that can be screwed thereto. The male screw 21 is formed on the handle shaft 20.

  The handle shaft 20 has a shaft end portion 22 located outward, and a handle 25 is fixed to the shaft 25 by an nut 24 via an end plate 23. The shaft end 22 is key-engaged with the shaft hole 26 of the handle 25 due to its cross-sectional shape. In addition, a coiled spring is interposed as an urging member 29 between an end surface 27 of the end member 17 that is an end portion on the shaft body side and an inner surface 28 of the end plate 23 that is an inner surface end portion on the slide cylinder side. One clamp 12 is urged away from the other clamp piece 13. Reference numeral 29a denotes a coil dropout prevention pin, which is attached to the front end of the slide cylinder 14.

  Further, a guide portion 30 is provided between the shaft body 11 and the slide cylinder 14 so that the female screw side does not rotate by the rotation operation on the male screw side and advances straight. The illustrated guide portion 30 includes a long hole 31 formed in the slide cylinder 14 in the axial direction of the shaft body, and a shaft pin 32 attached to the end member 17 that is an internal shaft body side member from the long hole 31. The shaft pin 32 is attached to the screw hole 33 formed in the end member 17 by screwing.

  With respect to such one clamp piece 12, the other clamp piece 13 is provided on the movable member 34 so as to be movable on the shaft and to be stopped at an arbitrary position. The movable member 34 incorporates a plurality of engaging pieces 36 each having a through hole 35 through which the shaft body 11 passes, and the edge of the through hole 35 bites into the outer peripheral surface of the shaft body 11 when it is inclined. (FIG. 4), a spring is combined as the biasing means 37 for biasing the engagement piece 36 in the engagement direction. An operation unit 36a is used when the engaging piece 36 is raised and moved. Reference numeral 38 denotes an operation unit window, and 25a denotes a handle knob.

  In the machining clamp 10 of the present invention configured as described above, a pair of clamp pieces 12 and 13 are applied to both sides of a target member 40, and one clamp piece 12 is tightened by a screw mechanism 15. (See FIG. 3). As shown in more detail in FIGS. 5 and 6, for example, in the case of a right-hand thread, when the handle 25 is rotated to the right, the female screw 16 and the male thread 21 are screwed together, and one clamp 12 is connected to the other clamp. 13 directions. For this reason, one clamp 12 and the other clamp 13 sandwich the target member 40 and tighten it from both sides, for example, hold the state until the adhesive of the member 40 is dried. The biasing member 29 is compressed by the tightening operation. Therefore, when one clamp 12 is released after the work is completed, the one clamp 12 can be easily returned to the original position by the elastic force accumulated in the biasing means 29.

  As for one clamp 12 and the other clamp 13, it is desirable for each clamping surface 12a and 13a to orthogonally cross with respect to the shaft tip 41 of the shaft body 11 (refer FIG. 3). Further, according to the present invention, one clamp 12 receives a driving force from the screw mechanism 15 on the shaft body, and the clamping surface 12a is located away from the shaft body 11 like the clamping surface 13a of the other clamp 13. Therefore, both the clamping surfaces 12 a and 13 a act equally on the member 40. Further, the rotational force accompanying the rotation of the handle 25 hardly reaches the member 40.

  According to the present invention, since the handle shaft is in the slide cylinder 14, when the member is processed while being clamped, the processing waste or the like does not adhere, and no problem is caused in work.

  The shaft bag 11 and the slide cylinder 14 are integrated, and deformation and breakage of the shaft can be prevented as in the conventional method in which a load is applied to the tip of the male screw.

  Since it is easy to configure all the parts so as to be removable, it is possible to easily disassemble, assemble and repeat them.

The perspective view which shows Example 1 of the clamp for a process which concerns on this invention. The exploded perspective view same as the above. Similarly a partially broken side view. Cross-sectional explanatory drawing of the other clamp. Sectional drawing which shows operation for fastening. Sectional drawing which similarly shows a clamp | tightening effect | action.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Processing clamp 11 Shaft body 12 One clamp 13 The other clamp 14 Slide cylinder 15 Screw mechanism 16 Female screw 17 End member 20 Handle shaft 21 Male screw 23 End plate 25 Handle 29 Energizing member 30 Guide part 31 Long hole 32 Shaft pin 34 Movable member 36 engagement piece

Claims (2)

A clamp for woodworking, metalworking, etc. that arranges a pair of clamp pieces on the shaft body with an interval, makes at least one clamp piece movable along the shaft body, and clamps a member between the other clamp pieces Because
The female screw of the male and female screws constituting the screw mechanism is provided in the opening of the pipe-shaped end of the shaft body, and the male screw is rotatably provided inside the slide cylinder located outside the shaft body, and is screwed with the female screw. In addition, a handle for rotating the male screw is provided, and the guide screw is moved so that the female screw side moves straight without rotating by the rotation of the male screw side, and one clamp piece provided outside the slide cylinder is moved along the shaft body. A machining clamp having a configuration in which a portion is provided between a shaft body and a slide cylinder. A configuration in which an urging member such as a coil spring is provided between the shaft body side end and the inner surface end of the slide cylinder so that one clamp piece is urged away from the other clamp piece. The processing clamp according to claim 1.

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